﻿using Newtonsoft.Json;
using StackExchange.Redis;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;

namespace BusinessCache
{
    public class RedisCache
    {
        private int DbNum { get; set; }
        /// <summary>
        /// Redis连接
        /// </summary>
        private readonly ConnectionMultiplexer _conn;
        /// <summary>
        /// 设置自定义键
        /// </summary>
        public string CustomKey;
        #region 构造函数
        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="dbNum"></param>
        public RedisCache(int dbNum = 0)
            : this(dbNum, null)
        {
        }
        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="dbNum"></param>
        /// <param name="readWriteHosts"></param>
        public RedisCache(int dbNum, string readWriteHosts)
        {
            DbNum = dbNum;
            _conn = string.IsNullOrWhiteSpace(readWriteHosts) ?
                    RedisConnectionHelp.Instance :
                    RedisConnectionHelp.GetConnectionMultiplexer(readWriteHosts);
        }
        #endregion 构造函数

        #region String

        #region 同步方法

        /// <summary>
        /// 保存单个key value
        /// </summary>
        /// <param name="key">Redis Key</param>
        /// <param name="value">保存的值</param>
        /// <param name="expiry">过期时间</param>
        /// <returns></returns>
        public bool StringSet(string key, string value, TimeSpan? expiry = default)
        {
            key = AddSysCustomKey(key);
            return Do(db => db.StringSet(key, value, expiry));
        }

        public bool StringSetNotExists(string key, string value, TimeSpan? expiry = default, When whens = When.NotExists)
        {
            key = AddSysCustomKey(key);
            return Do(db => db.StringSet(key, value, expiry, whens));
        }

        /// <summary>
        /// 保存多个key value
        /// </summary>
        /// <param name="keyValues">键值对</param>
        /// <returns></returns>
        public bool StringSet(List<KeyValuePair<RedisKey, RedisValue>> keyValues)
        {
            List<KeyValuePair<RedisKey, RedisValue>> newkeyValues = keyValues.Select(p => new KeyValuePair<RedisKey, RedisValue>(AddSysCustomKey(p.Key), p.Value)).ToList();
            return Do(db => db.StringSet(newkeyValues.ToArray()));
        }

        /// <summary>
        /// 保存一个对象
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <param name="obj"></param>
        /// <param name="expiry"></param>
        /// <returns></returns>
        public bool StringSet<T>(string key, T obj, TimeSpan? expiry = default)
        {
            key = AddSysCustomKey(key);
            string json = ConvertJson(obj);
            return Do(db => db.StringSet(key, json, expiry));
        }

        /// <summary>
        /// 获取单个key的值
        /// </summary>
        /// <param name="key">Redis Key</param>
        /// <returns></returns>
        public string StringGet(string key)
        {
            key = AddSysCustomKey(key);
            return Do(db => db.StringGet(key));
        }

        /// <summary>
        /// 获取多个Key
        /// </summary>
        /// <param name="listKey">Redis Key集合</param>
        /// <returns></returns>
        public RedisValue[] StringGet(List<string> listKey)
        {
            List<string> newKeys = listKey.Select(AddSysCustomKey).ToList();
            return Do(db => db.StringGet(ConvertRedisKeys(newKeys)));
        }

        /// <summary>
        /// 获取一个key的对象
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <returns></returns>
        public T StringGet<T>(string key)
        {
            key = AddSysCustomKey(key);
            return Do(db => ConvertObj<T>(db.StringGet(key)));
        }

        /// <summary>
        /// 为数字增长val
        /// </summary>
        /// <param name="key"></param>
        /// <param name="val">可以为负</param>
        /// <returns>增长后的值</returns>
        public double StringIncrement(string key, double val = 1)
        {
            key = AddSysCustomKey(key);
            return Do(db => db.StringIncrement(key, val));
        }

        /// <summary>
        /// 为数字减少val
        /// </summary>
        /// <param name="key"></param>
        /// <param name="val">可以为负</param>
        /// <returns>减少后的值</returns>
        public double StringDecrement(string key, double val = 1)
        {
            key = AddSysCustomKey(key);
            return Do(db => db.StringDecrement(key, val));
        }

        #endregion 同步方法

        #region 异步方法

        /// <summary>
        /// 保存单个key value
        /// </summary>
        /// <param name="key">Redis Key</param>
        /// <param name="value">保存的值</param>
        /// <param name="expiry">过期时间</param>
        /// <returns></returns>
        public async Task<bool> StringSetAsync(string key, string value, TimeSpan? expiry = default)
        {
            key = AddSysCustomKey(key);
            return await Do(db => db.StringSetAsync(key, value, expiry));
        }

        public async Task<bool> StringSetNotExistsAsync(string key, string value, TimeSpan? expiry = default, When whens = When.NotExists)
        {
            key = AddSysCustomKey(key);
            return await Do(db => db.StringSetAsync(key, value, expiry, whens));
        }

        /// <summary>
        /// 保存多个key value
        /// </summary>
        /// <param name="keyValues">键值对</param>
        /// <returns></returns>
        public async Task<bool> StringSetAsync(List<KeyValuePair<RedisKey, RedisValue>> keyValues)
        {
            List<KeyValuePair<RedisKey, RedisValue>> newkeyValues =
                keyValues.Select(p => new KeyValuePair<RedisKey, RedisValue>(AddSysCustomKey(p.Key), p.Value)).ToList();
            return await Do(db => db.StringSetAsync(newkeyValues.ToArray()));
        }

        /// <summary>
        /// 保存一个对象
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <param name="obj"></param>
        /// <param name="expiry"></param>
        /// <returns></returns>
        public async Task<bool> StringSetAsync<T>(string key, T obj, TimeSpan? expiry = default)
        {
            key = AddSysCustomKey(key);
            string json = ConvertJson(obj);
            return await Do(db => db.StringSetAsync(key, json, expiry));
        }

        /// <summary>
        /// 获取单个key的值
        /// </summary>
        /// <param name="key">Redis Key</param>
        /// <returns></returns>
        public async Task<string> StringGetAsync(string key)
        {
            key = AddSysCustomKey(key);
            return await Do(db => db.StringGetAsync(key));
        }

        /// <summary>
        /// 获取多个Key
        /// </summary>
        /// <param name="listKey">Redis Key集合</param>
        /// <returns></returns>
        public async Task<RedisValue[]> StringGetAsync(List<string> listKey)
        {
            List<string> newKeys = listKey.Select(AddSysCustomKey).ToList();
            return await Do(db => db.StringGetAsync(ConvertRedisKeys(newKeys)));
        }

        /// <summary>
        /// 获取一个key的对象
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <returns></returns>
        public async Task<T> StringGetAsync<T>(string key)
        {
            key = AddSysCustomKey(key);
            string result = await Do(db => db.StringGetAsync(key));
            return ConvertObj<T>(result);
        }

        /// <summary>
        /// 为数字增长val
        /// </summary>
        /// <param name="key"></param>
        /// <param name="val">可以为负</param>
        /// <returns>增长后的值</returns>
        public async Task<double> StringIncrementAsync(string key, double val = 1)
        {
            key = AddSysCustomKey(key);
            return await Do(db => db.StringIncrementAsync(key, val));
        }

        /// <summary>
        /// 为数字减少val
        /// </summary>
        /// <param name="key"></param>
        /// <param name="val">可以为负</param>
        /// <returns>减少后的值</returns>
        public async Task<double> StringDecrementAsync(string key, double val = 1)
        {
            key = AddSysCustomKey(key);
            return await Do(db => db.StringDecrementAsync(key, val));
        }

        #endregion 异步方法

        #endregion String

        #region Hash

        #region 同步方法

        /// <summary>
        /// 判断某个数据是否已经被缓存
        /// </summary>
        /// <param name="key"></param>
        /// <param name="dataKey"></param>
        /// <returns></returns>
        public bool HashExists(string key, string dataKey)
        {
            key = AddSysCustomKey(key);
            return Do(db => db.HashExists(key, dataKey));
        }

        /// <summary>
        /// 存储数据到hash表
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <param name="dataKey"></param>
        /// <param name="t"></param>
        /// <returns></returns>
        public bool HashSet<T>(string key, string dataKey, T t)
        {
            key = AddSysCustomKey(key);
            return Do(db =>
            {
                string json = ConvertJson(t);
                return db.HashSet(key, dataKey, json);
            });
        }

        /// <summary>
        /// 移除hash中的某值
        /// </summary>
        /// <param name="key"></param>
        /// <param name="dataKey"></param>
        /// <returns></returns>
        public bool HashDelete(string key, string dataKey)
        {
            key = AddSysCustomKey(key);
            return Do(db => db.HashDelete(key, dataKey));
        }

        /// <summary>
        /// 移除hash中的多个值
        /// </summary>
        /// <param name="key"></param>
        /// <param name="dataKeys"></param>
        /// <returns></returns>
        public long HashDelete(string key, List<RedisValue> dataKeys)
        {
            key = AddSysCustomKey(key);
            //List<RedisValue> dataKeys1 = new List<RedisValue>() {"1","2"};
            return Do(db => db.HashDelete(key, dataKeys.ToArray()));
        }

        /// <summary>
        /// 从hash表获取某个值
        /// </summary>
        /// <param name="key"></param>
        /// <param name="dataKey"></param>
        /// <returns></returns>
        public string HashGet(string key, string dataKey)
        {
            key = AddSysCustomKey(key);
            return Do(db =>
            {
                string value = db.HashGet(key, dataKey);
                return value;
            });
        }

        /// <summary>
        /// 从hash表获取Model
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <param name="dataKey"></param>
        /// <returns></returns>
        public T HashGet<T>(string key, string dataKey)
        {
            key = AddSysCustomKey(key);
            return Do(db =>
            {
                string value = db.HashGet(key, dataKey);
                return ConvertObj<T>(value);
            });
        }

        /// <summary>
        /// 从hash表获取List
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <returns></returns>
        public IList<T> HashGetList<T>(string key)
        {
            key = AddSysCustomKey(key);
            return Do(db =>
            {
                RedisValue[] values = db.HashValues(key);
                return ConvetList<T>(values);
            });
        }

        /// <summary>
        /// 为数字增长val
        /// </summary>
        /// <param name="key"></param>
        /// <param name="dataKey"></param>
        /// <param name="val">可以为负</param>
        /// <returns>增长后的值</returns>
        public double HashIncrement(string key, string dataKey, double val = 1)
        {
            key = AddSysCustomKey(key);
            return Do(db => db.HashIncrement(key, dataKey, val));
        }

        /// <summary>
        /// 为数字减少val
        /// </summary>
        /// <param name="key"></param>
        /// <param name="dataKey"></param>
        /// <param name="val">可以为负</param>
        /// <returns>减少后的值</returns>
        public double HashDecrement(string key, string dataKey, double val = 1)
        {
            key = AddSysCustomKey(key);
            return Do(db => db.HashDecrement(key, dataKey, val));
        }

        /// <summary>
        /// 获取hashkey所有Redis key
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <returns></returns>
        public List<T> HashKeys<T>(string key)
        {
            key = AddSysCustomKey(key);
            return Do(db =>
            {
                RedisValue[] values = db.HashKeys(key);
                return ConvetList<T>(values);
            });
        }

        #endregion 同步方法

        #region 异步方法

        /// <summary>
        /// 判断某个数据是否已经被缓存
        /// </summary>
        /// <param name="key"></param>
        /// <param name="dataKey"></param>
        /// <returns></returns>
        public async Task<bool> HashExistsAsync(string key, string dataKey)
        {
            key = AddSysCustomKey(key);
            return await Do(db => db.HashExistsAsync(key, dataKey));
        }

        /// <summary>
        /// 存储数据到hash表
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <param name="dataKey"></param>
        /// <param name="t"></param>
        /// <returns></returns>
        public async Task<bool> HashSetAsync<T>(string key, string dataKey, T t)
        {
            key = AddSysCustomKey(key);
            return await Do(db =>
            {
                string json = ConvertJson(t);
                return db.HashSetAsync(key, dataKey, json);
            });
        }

        /// <summary>
        /// 移除hash中的某值
        /// </summary>
        /// <param name="key"></param>
        /// <param name="dataKey"></param>
        /// <returns></returns>
        public async Task<bool> HashDeleteAsync(string key, string dataKey)
        {
            key = AddSysCustomKey(key);
            return await Do(db => db.HashDeleteAsync(key, dataKey));
        }

        /// <summary>
        /// 移除hash中的多个值
        /// </summary>
        /// <param name="key"></param>
        /// <param name="dataKeys"></param>
        /// <returns></returns>
        public async Task<long> HashDeleteAsync(string key, List<RedisValue> dataKeys)
        {
            key = AddSysCustomKey(key);
            //List<RedisValue> dataKeys1 = new List<RedisValue>() {"1","2"};
            return await Do(db => db.HashDeleteAsync(key, dataKeys.ToArray()));
        }

        /// <summary>
        /// 从hash表获取数据
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <param name="dataKey"></param>
        /// <returns></returns>
        public async Task<T> HashGeAsync<T>(string key, string dataKey)
        {
            key = AddSysCustomKey(key);
            string value = await Do(db => db.HashGetAsync(key, dataKey));
            return ConvertObj<T>(value);
        }

        /// <summary>
        /// 为数字增长val
        /// </summary>
        /// <param name="key"></param>
        /// <param name="dataKey"></param>
        /// <param name="val">可以为负</param>
        /// <returns>增长后的值</returns>
        public async Task<double> HashIncrementAsync(string key, string dataKey, double val = 1)
        {
            key = AddSysCustomKey(key);
            return await Do(db => db.HashIncrementAsync(key, dataKey, val));
        }

        /// <summary>
        /// 为数字减少val
        /// </summary>
        /// <param name="key"></param>
        /// <param name="dataKey"></param>
        /// <param name="val">可以为负</param>
        /// <returns>减少后的值</returns>
        public async Task<double> HashDecrementAsync(string key, string dataKey, double val = 1)
        {
            key = AddSysCustomKey(key);
            return await Do(db => db.HashDecrementAsync(key, dataKey, val));
        }

        /// <summary>
        /// 获取hashkey所有Redis key
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <returns></returns>
        public async Task<List<T>> HashKeysAsync<T>(string key)
        {
            key = AddSysCustomKey(key);
            RedisValue[] values = await Do(db => db.HashKeysAsync(key));
            return ConvetList<T>(values);
        }

        #endregion 异步方法

        #endregion Hash

        #region List

        #region 同步方法

        /// <summary>
        /// 移除指定ListId的内部List的值
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        public void ListRemove<T>(string key, T value)
        {
            key = AddSysCustomKey(key);
            Do(db => db.ListRemove(key, ConvertJson(value)));
        }

        /// <summary>
        /// 获取指定key的List
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public List<T> ListRange<T>(string key)
        {
            key = AddSysCustomKey(key);
            return Do(redis =>
            {
                var values = redis.ListRange(key);
                return ConvetList<T>(values);
            });
        }

        /// <summary>
        /// 入队
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        public void ListRightPush<T>(string key, T value)
        {
            key = AddSysCustomKey(key);
            Do(db => db.ListRightPush(key, ConvertJson(value)));
        }

        /// <summary>
        /// 出队
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <returns></returns>
        public T ListRightPop<T>(string key)
        {
            key = AddSysCustomKey(key);
            return Do(db =>
            {
                var value = db.ListRightPop(key);
                return ConvertObj<T>(value);
            });
        }

        /// <summary>
        /// 入栈
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <param name="value"></param>
        public void ListLeftPush<T>(string key, T value)
        {
            key = AddSysCustomKey(key);
            Do(db => db.ListLeftPush(key, ConvertJson(value)));
        }

        /// <summary>
        /// 出栈
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <returns></returns>
        public T ListLeftPop<T>(string key)
        {
            key = AddSysCustomKey(key);
            return Do(db =>
            {
                var value = db.ListLeftPop(key);
                return ConvertObj<T>(value);
            });
        }

        /// <summary>
        /// 获取集合中的数量
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public long ListLength(string key)
        {
            key = AddSysCustomKey(key);
            return Do(redis => redis.ListLength(key));
        }

        #endregion 同步方法

        #region 异步方法

        /// <summary>
        /// 移除指定ListId的内部List的值
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        public async Task<long> ListRemoveAsync<T>(string key, T value)
        {
            key = AddSysCustomKey(key);
            return await Do(db => db.ListRemoveAsync(key, ConvertJson(value)));
        }

        /// <summary>
        /// 获取指定key的List
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public async Task<List<T>> ListRangeAsync<T>(string key)
        {
            key = AddSysCustomKey(key);
            var values = await Do(redis => redis.ListRangeAsync(key));
            return ConvetList<T>(values);
        }

        /// <summary>
        /// 入队
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        public async Task<long> ListRightPushAsync<T>(string key, T value)
        {
            key = AddSysCustomKey(key);
            return await Do(db => db.ListRightPushAsync(key, ConvertJson(value)));
        }

        /// <summary>
        /// 出队
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <returns></returns>
        public async Task<T> ListRightPopAsync<T>(string key)
        {
            key = AddSysCustomKey(key);
            var value = await Do(db => db.ListRightPopAsync(key));
            return ConvertObj<T>(value);
        }

        /// <summary>
        /// 入栈
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <param name="value"></param>
        public async Task<long> ListLeftPushAsync<T>(string key, T value)
        {
            key = AddSysCustomKey(key);
            return await Do(db => db.ListLeftPushAsync(key, ConvertJson(value)));
        }

        /// <summary>
        /// 出栈
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="key"></param>
        /// <returns></returns>
        public async Task<T> ListLeftPopAsync<T>(string key)
        {
            key = AddSysCustomKey(key);
            var value = await Do(db => db.ListLeftPopAsync(key));
            return ConvertObj<T>(value);
        }

        /// <summary>
        /// 获取集合中的数量
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public async Task<long> ListLengthAsync(string key)
        {
            key = AddSysCustomKey(key);
            return await Do(redis => redis.ListLengthAsync(key));
        }

        #endregion 异步方法

        #endregion List

        #region SortedSet 有序集合

        #region 同步方法

        /// <summary>
        /// 添加
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        /// <param name="score"></param>
        public bool SortedSetAdd<T>(string key, T value, double score)
        {
            key = AddSysCustomKey(key);
            return Do(redis => redis.SortedSetAdd(key, ConvertJson<T>(value), score));
        }

        /// <summary>
        /// 删除
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        public bool SortedSetRemove<T>(string key, T value)
        {
            key = AddSysCustomKey(key);
            return Do(redis => redis.SortedSetRemove(key, ConvertJson(value)));
        }

        /// <summary>
        /// 获取全部
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public List<T> SortedSetRangeByRank<T>(string key)
        {
            key = AddSysCustomKey(key);
            return Do(redis =>
            {
                var values = redis.SortedSetRangeByRank(key);
                return ConvetList<T>(values);
            });
        }

        /// <summary>
        /// 获取集合中的数量
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public long SortedSetLength(string key)
        {
            key = AddSysCustomKey(key);
            return Do(redis => redis.SortedSetLength(key));
        }

        #endregion 同步方法

        #region 异步方法

        /// <summary>
        /// 添加
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        /// <param name="score"></param>
        public async Task<bool> SortedSetAddAsync<T>(string key, T value, double score)
        {
            key = AddSysCustomKey(key);
            return await Do(redis => redis.SortedSetAddAsync(key, ConvertJson<T>(value), score));
        }

        /// <summary>
        /// 删除
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        public async Task<bool> SortedSetRemoveAsync<T>(string key, T value)
        {
            key = AddSysCustomKey(key);
            return await Do(redis => redis.SortedSetRemoveAsync(key, ConvertJson(value)));
        }

        /// <summary>
        /// 获取全部
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public async Task<List<T>> SortedSetRangeByRankAsync<T>(string key)
        {
            key = AddSysCustomKey(key);
            var values = await Do(redis => redis.SortedSetRangeByRankAsync(key));
            return ConvetList<T>(values);
        }

        /// <summary>
        /// 获取集合中的数量
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public async Task<long> SortedSetLengthAsync(string key)
        {
            key = AddSysCustomKey(key);
            return await Do(redis => redis.SortedSetLengthAsync(key));
        }

        #endregion 异步方法

        #endregion SortedSet 有序集合

        #region key

        /// <summary>
        /// 删除单个key
        /// </summary>
        /// <param name="key">redis key</param>
        /// <returns>是否删除成功</returns>
        public bool KeyDelete(string key)
        {
            key = AddSysCustomKey(key);
            return Do(db => db.KeyDelete(key));
        }
        /// <summary>
        /// 删除单个key
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public Task<bool> KeyDeleteAsync(string key)
        {
            key = AddSysCustomKey(key);
            return Do(db => db.KeyDeleteAsync(key));
        }

        /// <summary>
        /// 删除多个key
        /// </summary>
        /// <param name="keys">rediskey</param>
        /// <returns>成功删除的个数</returns>
        public long KeyDelete(List<string> keys)
        {
            List<string> newKeys = keys.Select(AddSysCustomKey).ToList();
            return Do(db => db.KeyDelete(ConvertRedisKeys(newKeys)));
        }

        /// <summary>
        /// 判断key是否存储
        /// </summary>
        /// <param name="key">redis key</param>
        /// <returns></returns>
        public bool KeyExists(string key)
        {
            key = AddSysCustomKey(key);
            return Do(db => db.KeyExists(key));
        }

        /// <summary>
        /// 重新命名key
        /// </summary>
        /// <param name="key">就的redis key</param>
        /// <param name="newKey">新的redis key</param>
        /// <returns></returns>
        public bool KeyRename(string key, string newKey)
        {
            key = AddSysCustomKey(key);
            return Do(db => db.KeyRename(key, newKey));
        }

        /// <summary>
        /// 设置Key的时间
        /// </summary>
        /// <param name="key">redis key</param>
        /// <param name="expiry"></param>
        /// <returns></returns>
        public bool KeyExpire(string key, TimeSpan? expiry = default)
        {
            key = AddSysCustomKey(key);
            return Do(db => db.KeyExpire(key, expiry));
        }

        #endregion key

        #region 发布订阅

        /// <summary>
        /// Redis发布订阅  订阅
        /// </summary>
        /// <param name="subChannel"></param>
        /// <param name="handler"></param>
        public void Subscribe(string subChannel, Action<RedisChannel, RedisValue> handler = null)
        {
            ISubscriber sub = _conn.GetSubscriber();
            sub.Subscribe(subChannel, (channel, message) =>
            {
                //接收订阅消息，处理逻辑
                if (handler == null)
                {
                    Console.WriteLine(subChannel + " 订阅收到消息：" + message);
                }
                else
                {
                    handler(channel, message);
                }
            });
            //写法二
            sub.Subscribe(subChannel, new Action<RedisChannel, RedisValue>((channel, message) =>
            {
                Console.WriteLine(subChannel + " 订阅收到消息：" + message);
            }));
            //写法三
            sub.Subscribe(subChannel, new Action<RedisChannel, RedisValue>(GetMessage));
        }

        /// <summary>
        /// 获取订阅消息（写法三）
        /// </summary>
        /// <param name="channel"></param>
        /// <param name="message"></param>
        static void GetMessage(RedisChannel channel, RedisValue message)
        {
            Console.WriteLine(channel + " 订阅收到消息：" + message);
        }

        /// <summary>
        /// Redis发布订阅  发布
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="channel"></param>
        /// <param name="msg"></param>
        /// <returns></returns>
        public long Publish<T>(string channel, T msg)
        {
            ISubscriber sub = _conn.GetSubscriber();
            return sub.Publish(channel, ConvertJson(msg));
        }

        /// <summary>
        /// Redis发布订阅  取消订阅
        /// </summary>
        /// <param name="channel"></param>
        public void Unsubscribe(string channel)
        {
            ISubscriber sub = _conn.GetSubscriber();
            sub.Unsubscribe(channel);
        }

        /// <summary>
        /// Redis发布订阅  取消全部订阅
        /// </summary>
        public void UnsubscribeAll()
        {
            ISubscriber sub = _conn.GetSubscriber();
            sub.UnsubscribeAll();
        }

        #endregion 发布订阅

        #region 其他

        /// <summary>
        /// 续命线程取消令牌
        /// </summary>
        private CancellationTokenSource tokenSource = new CancellationTokenSource();
        /// <summary>
        /// 为锁续命(防止业务操作时间大于锁自动释放时间，锁被自动释放掉)
        /// </summary>
        public void CreateThredXm(IDatabase db, string key, string value, TimeSpan span)
        {
            Task.Run(() =>
            {
                while (true)
                {
                    System.Diagnostics.Debug.WriteLine("锁" + value + "续命");
                    Thread.Sleep(span.Seconds * 1000 / 3);//10
                    //外部取消 退出子线程
                    if (tokenSource.IsCancellationRequested)
                    {
                        return;
                    }
                    //查询key还有多少秒释放
                    //var Seconds = RedisHelper.PTtl(lockKey) / 1000;
                    //key还剩1/3秒时重设过期时间
                    if (true)//Seconds < (lockTime / 3)
                    {
                        //小于5秒则自动 重设过期时间
                        //RedisHelper.Expire(lockKey, lockTime);

                        db.KeyExpire(key, span);
                    }
                }
            }, tokenSource.Token);
        }

        public string GetLock2(string key, string value, TimeSpan span)
        {

            value = System.Guid.NewGuid().ToString();
            var db = GetDatabase();
            try
            {
                //测试下来 两个都是异步的方法中间有延迟
                //Task<string> ttt = WaitAsync((ct) =>
                //{
                //    CancellationTokenSource tcs = (CancellationTokenSource)ct;
                //    while (!db.StringSet(key, value, TimeSpan.FromSeconds(6), When.NotExists))
                //    {
                //        if (tcs.IsCancellationRequested)
                //        {
                //            throw new Exception("超时");
                //        }
                //        Task.Delay(1);
                //    }

                //    return "1";
                //}, TimeSpan.FromSeconds(2));
                //string tt = ttt.Result;
                //if (tt == "1")

                if (GetLock(db, key, value, span))
                {

                    System.Diagnostics.Debug.WriteLine("抢到锁" + value);
                    //续命
                    CreateThredXm(db, key, value, span);

                    //暂停 10秒
                    Thread.Sleep(15000);

                    tokenSource.Cancel();
                    //runs = false;



                    System.Diagnostics.Debug.WriteLine("锁执行完成" + value);



                    return "抢到锁执行完成";
                }
                else
                {
                    System.Diagnostics.Debug.WriteLine("超时未抢到锁" + value);
                    return "超时未抢到锁";
                }


            }
            catch (Exception ex)
            {
                System.Diagnostics.Debug.WriteLine("超时未抢到锁" + value);
                return "超时未抢到锁";
            }
            finally
            {
                //Console.WriteLine("执行完锁" + value);
                if (db.StringGet(key) == value)
                {
                    db.KeyDelete(key);

                    System.Diagnostics.Debug.WriteLine("删除锁" + value);
                }
            }
        }


        //public static async Task<TResult> WaitAsync<TResult>(this Task<TResult> task, TimeSpan timeout)
        //{
        //    using (var timeoutCancellationTokenSource = new CancellationTokenSource())
        //    {
        //        var delayTask = Task.Delay(timeout, timeoutCancellationTokenSource.Token);
        //        if (await Task.WhenAny(task, delayTask) == task)
        //        {
        //            timeoutCancellationTokenSource.Cancel();
        //            return await task;
        //        }
        //        throw new TimeoutException("The operation has timed out.");
        //    }
        //}

        public async Task<string> WaitAsync(Func<object, string> func, TimeSpan timeout)
        {
            using (var timeoutCancellationTokenSource = new CancellationTokenSource())
            {
                CancellationTokenSource tc = new CancellationTokenSource();
                var delayTask = Task.Delay(timeout, timeoutCancellationTokenSource.Token);
                //var taskfun = Task.Run(func, tc.Token);//func

                //var taskfun = Task.Factory.StartNew(i =>
                //{

                //    return "1";
                //}, tc, tc.Token);

                var taskfun = Task.Factory.StartNew<string>(func, tc, tc.Token);

                if (await Task.WhenAny(taskfun, delayTask) == taskfun)
                {
                    //结束另一个
                    timeoutCancellationTokenSource.Cancel();
                    return await taskfun;
                }
                else
                {
                    //结束另一个 但是结束的瞬间 可能另一个线程还会执行成功
                    tc.Cancel();
                    throw new TimeoutException("The operation has timed out.");
                }
            }
        }


        private bool GetLock(IDatabase db, string key, string value, TimeSpan span)
        {
            var cts = new CancellationTokenSource(TimeSpan.FromSeconds(2));//span
            var ct = cts.Token;

            var task = Task.Factory.StartNew(() =>
            {
                while (!db.StringSet(key, value, TimeSpan.FromSeconds(10), When.NotExists))
                {
                    if (cts.Token.IsCancellationRequested)
                        throw new OperationCanceledException();

                    Task.Delay(1);
                    Console.WriteLine("没抢到");
                }

                Console.WriteLine("抢到了");
                return true;
            }, ct);


            try
            {
                task.Wait();
            }
            catch (OperationCanceledException ex)
            {
                if (cts.Token.IsCancellationRequested)
                {
                    return false;
                }
            }
            catch
            {
                if (cts.Token.IsCancellationRequested)
                {
                    return false;
                }

                //if (task.IsCanceled)
                //{
                //    return false;
                //}
            }
            if (cts.Token.IsCancellationRequested)
            {
                return false;
            }
            if (task.IsCanceled)
            {
                return false;
            }
            return task.Result;
        }

        public bool CreateLockTake(string LockName, Func<IDatabase, bool> dofunc)
        {
            var db = GetDatabase();
            if (db.LockTake(LockName, "1", TimeSpan.FromSeconds(2)))
            {
                try
                {
                    //TODO:开始做你需要的事情

                    dofunc(db);

                    return true;

                }
                catch (Exception)
                {
                    return false;
                }
                finally
                {
                    db.LockRelease(LockName, "1");
                }
            }
            return false;
        }

        /// <summary>
        /// 获取事物
        /// </summary>
        /// <returns></returns>
        public ITransaction CreateTransaction()
        {
            return GetDatabase().CreateTransaction();
        }

        /// <summary>
        /// 获取批处理（管道模式）
        /// </summary>
        /// <returns></returns>
        public IBatch CreateBatch()
        {
            return GetDatabase().CreateBatch();
        }
        /// <summary>
        /// 
        /// </summary>
        /// <returns></returns>
        public IDatabase GetDatabase()
        {
            return _conn.GetDatabase(DbNum);
        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="hostAndPort"></param>
        /// <returns></returns>
        public IServer GetServer(string hostAndPort)
        {
            return _conn.GetServer(hostAndPort);
        }

        /// <summary>
        /// 
        /// </summary>
        /// <param name="dbNum"></param>
        public void FlushDatabase(int dbNum)
        {
            var list = _conn.GetEndPoints();
            foreach (var item in list)
            {
                _conn.GetServer(item).FlushDatabase(dbNum);
            }

        }
        /// <summary>
        /// 
        /// </summary>
        /// <param name="dbNum"></param>
        /// <returns></returns>
        public async Task FlushDatabaseAsync(int dbNum)
        {
            var list = _conn.GetEndPoints();
            foreach (var item in list)
            {
                await _conn.GetServer(item).FlushDatabaseAsync(dbNum);
            }

        }

        /// <summary>
        /// 设置前缀
        /// </summary>
        /// <param name="customKey">自定义键</param>
        public void SetSysCustomKey(string customKey)
        {
            CustomKey = customKey;
        }

        #endregion 其他

        #region 辅助方法
        /// <summary>
        /// 添加自定义键
        /// </summary>
        /// <param name="oldKey"></param>
        /// <returns></returns>
        private string AddSysCustomKey(string oldKey)
        {
            var prefixKey = CustomKey ?? RedisConnectionHelp.SysCustomKey;
            return prefixKey + oldKey;
        }

        private T Do<T>(Func<IDatabase, T> func)
        {
            var database = _conn.GetDatabase(DbNum);
            return func(database);
        }

        /// <summary>
        /// 序列化
        /// </summary>
        /// <typeparam name="T">类</typeparam>
        /// <param name="value">值</param>
        /// <returns></returns>
        private string ConvertJson<T>(T value)
        {
            string result = value is string ? value.ToString() : JsonConvert.SerializeObject(value);
            return result;
        }

        /// <summary>
        /// 反序列化
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="value"></param>
        /// <returns></returns>
        private T ConvertObj<T>(RedisValue value)
        {
            if (value.IsNullOrEmpty)
            {
                return default;
            }
            if (typeof(T) == typeof(string))
            {
                return (T)Convert.ChangeType(value, typeof(T));
            }
            return JsonConvert.DeserializeObject<T>(value);
        }

        private List<T> ConvetList<T>(RedisValue[] values)
        {
            List<T> result = new List<T>();
            foreach (var item in values)
            {
                if (!item.IsNullOrEmpty)
                {
                    var model = ConvertObj<T>(item);
                    result.Add(model);
                }
            }
            return result;
        }


        private RedisKey[] ConvertRedisKeys(List<string> redisKeys)
        {
            return redisKeys.Select(redisKey => (RedisKey)redisKey).ToArray();
        }

        #endregion 辅助方法
    }
}
